Data Sheet

NAU7802 24-bit ADC
Nuvoton Confidential - 9 - Revision 1.7
DIGITAL SERIAL INTERFACE
Input Leakage Current SCK, SI
-1
-
+1
A
DVDD = 5.5V, 0<V
IN
<DVDD
Input High Voltage VIH
0.7 VDD
5.5
V
Input low Voltage VIL
DVSS
0.3 VDD
V
VOH (DRDY)
0.9
DVDD
V
IOH = 1 mA
VOH (SCLK, SDIO)
0.9
DVDD
V
Defined by pull up resistor.
(Internal weak, internal strong,
external.)
VOL (SCLK, SDIO, DRDY)
0.2
DVDD
V
IOL = 1 mA
SDIO pull-up resistor Input High
Voltage P1, P2, P3 (TTL input)
DVDD
V
V
DD
= 5.5V
SDIO, SCLK; pull up resistor value
1.6 k
50 k
none
Ohm
Selectable; strong, weak, none
Power On Reset Voltage
1.6
V
7.3 RC OSC AND AC CHARACTERISTICS
Parameter
Specification (reference)
Test Conditions
Min.
Typ.
Max.
Unit
4.9152 MHz On-chip RC oscillator
+/-3
%
DVDD = 5V, T=25C; NAU7802 only
T
RDY
: Analog part wakeup stable plus
Data Ready after exiting power-down
mode
600
ms
DVDD = 5V; at 10 S/sec
(5 sample times plus 100 ms)
7.4 TEMPERATURE SENSOR
Parameter
Specification (reference)
Test Conditions
Min.
Typ.
Max.
Unit
Temperature sensor output
109
mV
at 25°C
Temperature sensor delta coefficient
360
uV / °C
relative to 25°C